1012221012111 has 8 divisors (see below), whose sum is σ = 1364792376240. Its totient is φ = 667231828032.

The previous prime is 1012221012073. The next prime is 1012221012149. The reversal of 1012221012111 is 1112101222101.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1012221012073) and next prime (1012221012149).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1012221012111 - 2¹¹ = 1012221010063 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012221017111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1895544700 + ... + 1895545233.

It is an arithmetic number, because the mean of its divisors is an integer number (170599047030).

Almost surely, 2^{1012221012111} is an apocalyptic number.

1012221012111 is a deficient number, since it is larger than the sum of its proper divisors (352571364129).

1012221012111 is an equidigital number, since it uses as much as digits as its factorization.

1012221012111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3791090025.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 1012221012111 its reverse (1112101222101), we get a palindrome (2124322234212).

The spelling of 1012221012111 in words is "one trillion, twelve billion, two hundred twenty-one million, twelve thousand, one hundred eleven".